I finally solved this thing.

I bought it today for B$2.00 lol I just can't resist.
It has 6 color-sides similar to Rubik's Cube. I think this puzzle is more easier to solve because there's no algorithm needed to solve one & there's no OLL/PLL. People who can solve the Rubik's Cube will be able to solve this easily & even if you can't solve one, this puzzle will be a piece of cake for ya! (It's easier than 2x2 in my opinion).
But it might take time to work out how the mechanism works.
However, I don't think I can speedsolve this cuz it needs a lot of force to move the centre.

And for the sake of the tournament this Sunday, I bought a new cube. This one is different(pre-lubed!), it turns really well out of the box. I don't even need to lube it. If you want to buy it here's what the box looks like;

It says 'Revenge Cube' instead of..

..'Rubik's Cube'.